2024年5月，美国政府宣布对从中国进口的半导体产品加征关税，但同时设定了18个月的豁免期。这一安排引发广泛关注。所谓‘限免期’，是指在政策正式实施前给予企业一段缓冲时间，以便调整供应链、寻找替代方案或完成现有订单。设置18个月的豁免期，主要出于三方面考虑：一是避免对美国本土科技企业造成剧烈冲击，许多美国公司仍高度依赖中国制造的成熟制程芯片；二是为美国及其盟友加速本土或友岸（friend-shoring）产能建设争取时间；三是减少市场波动，防止因突然加税导致全球半导体价格飙升和供应中断。此外，此举也体现了拜登政府在对华科技遏制与维持经济稳定之间的谨慎平衡。值得注意的是，豁免期并非永久保护，而是战略过渡阶段，预示着未来中美在半导体领域的脱钩趋势可能进一步加剧。
In May 2024, the U.S. government announced new tariffs on semiconductors imported from China but simultaneously granted an 18-month exemption period. This ‘grace period’ allows companies time to adjust their supply chains, seek alternative sources, or fulfill existing orders before the tariffs take full effect. The 18-month window reflects three key considerations: First, it aims to shield U.S. tech firms—many of which still rely heavily on Chinese-made mature-node chips—from sudden cost shocks. Second, it provides time for the U.S. and its allies to ramp up domestic or ‘friend-shored’ semiconductor production capacity. Third, it helps mitigate market volatility and prevent abrupt price surges or supply disruptions in the global chip market. The move underscores the Biden administration’s careful balancing act between curbing China’s technological rise and maintaining economic stability. Importantly, this exemption is not a permanent reprieve but a strategic transition phase, signaling a likely acceleration in the decoupling of U.S.-China semiconductor supply chains in the near future.
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